{
  "title":"ECMAScript 2015 (ES6)",
  "description":"Support for the ECMAScript 2015 specification. Features include Promises, Modules, Classes, Template Literals, Arrow Functions, Let and Const, Default Parameters, Generators, Destructuring Assignment, Rest & Spread, Map/Set & WeakMap/WeakSet and many more.",
  "spec":"https://tc39.es/ecma262/",
  "status":"other",
  "links":[
    {
      "url":"http://es6-features.org",
      "title":"ES6 New features: overview and comparisons"
    },
    {
      "url":"https://exploringjs.com/es6/",
      "title":"Exploring ES6 (book)"
    },
    {
      "url":"https://github.com/zloirock/core-js#ecmascript",
      "title":"Polyfill for all possible ES2015 features is available in the core-js library"
    }
  ],
  "bugs":[
    
  ],
  "categories":[
    "JS"
  ],
  "stats":{
    "ie":{
      "5.5":"n",
      "6":"n",
      "7":"n",
      "8":"n",
      "9":"n",
      "10":"n",
      "11":"a #1 #2"
    },
    "edge":{
      "12":"a #2",
      "13":"a #2",
      "14":"a #2",
      "15":"y #2 #3",
      "16":"y #2 #3",
      "17":"y #2 #3",
      "18":"y #2 #3",
      "79":"y #2",
      "80":"y #2",
      "81":"y #2",
      "83":"y #2",
      "84":"y #2",
      "85":"y #2",
      "86":"y #2",
      "87":"y #2",
      "88":"y #2",
      "89":"y #2",
      "90":"y #2",
      "91":"y #2",
      "92":"y #2",
      "93":"y #2",
      "94":"y #2",
      "95":"y #2",
      "96":"y #2"
    },
    "firefox":{
      "2":"n",
      "3":"n",
      "3.5":"n",
      "3.6":"n",
      "4":"n",
      "5":"n",
      "6":"a",
      "7":"a",
      "8":"a",
      "9":"a",
      "10":"a",
      "11":"a",
      "12":"a",
      "13":"a",
      "14":"a",
      "15":"a",
      "16":"a",
      "17":"a",
      "18":"a",
      "19":"a",
      "20":"a",
      "21":"a",
      "22":"a",
      "23":"a",
      "24":"a",
      "25":"a",
      "26":"a",
      "27":"a",
      "28":"a",
      "29":"a",
      "30":"a",
      "31":"a",
      "32":"a",
      "33":"a",
      "34":"a",
      "35":"a",
      "36":"a",
      "37":"a",
      "38":"a",
      "39":"a",
      "40":"a",
      "41":"a",
      "42":"a",
      "43":"a",
      "44":"a",
      "45":"a",
      "46":"a",
      "47":"a",
      "48":"a",
      "49":"a",
      "50":"a",
      "51":"a",
      "52":"a",
      "53":"a",
      "54":"y #2",
      "55":"y #2",
      "56":"y #2",
      "57":"y #2",
      "58":"y #2",
      "59":"y #2",
      "60":"y #2",
      "61":"y #2",
      "62":"y #2",
      "63":"y #2",
      "64":"y #2",
      "65":"y #2",
      "66":"y #2",
      "67":"y #2",
      "68":"y #2",
      "69":"y #2",
      "70":"y #2",
      "71":"y #2",
      "72":"y #2",
      "73":"y #2",
      "74":"y #2",
      "75":"y #2",
      "76":"y #2",
      "77":"y #2",
      "78":"y #2",
      "79":"y #2",
      "80":"y #2",
      "81":"y #2",
      "82":"y #2",
      "83":"y #2",
      "84":"y #2",
      "85":"y #2",
      "86":"y #2",
      "87":"y #2",
      "88":"y #2",
      "89":"y #2",
      "90":"y #2",
      "91":"y #2",
      "92":"y #2",
      "93":"y #2",
      "94":"y #2",
      "95":"y #2",
      "96":"y #2",
      "97":"y #2"
    },
    "chrome":{
      "4":"n",
      "5":"n",
      "6":"n",
      "7":"n",
      "8":"n",
      "9":"n",
      "10":"n",
      "11":"n",
      "12":"n",
      "13":"n",
      "14":"n",
      "15":"n",
      "16":"n",
      "17":"n",
      "18":"n",
      "19":"n",
      "20":"n",
      "21":"a",
      "22":"a",
      "23":"a",
      "24":"a",
      "25":"a",
      "26":"a",
      "27":"a",
      "28":"a",
      "29":"a",
      "30":"a",
      "31":"a",
      "32":"a",
      "33":"a",
      "34":"a",
      "35":"a",
      "36":"a",
      "37":"a",
      "38":"a",
      "39":"a",
      "40":"a",
      "41":"a",
      "42":"a",
      "43":"a",
      "44":"a",
      "45":"a",
      "46":"a",
      "47":"a",
      "48":"a",
      "49":"a",
      "50":"a",
      "51":"y #2",
      "52":"y #2",
      "53":"y #2",
      "54":"y #2",
      "55":"y #2",
      "56":"y #2",
      "57":"y #2",
      "58":"y #2",
      "59":"y #2",
      "60":"y #2",
      "61":"y #2",
      "62":"y #2",
      "63":"y #2",
      "64":"y #2",
      "65":"y #2",
      "66":"y #2",
      "67":"y #2",
      "68":"y #2",
      "69":"y #2",
      "70":"y #2",
      "71":"y #2",
      "72":"y #2",
      "73":"y #2",
      "74":"y #2",
      "75":"y #2",
      "76":"y #2",
      "77":"y #2",
      "78":"y #2",
      "79":"y #2",
      "80":"y #2",
      "81":"y #2",
      "83":"y #2",
      "84":"y #2",
      "85":"y #2",
      "86":"y #2",
      "87":"y #2",
      "88":"y #2",
      "89":"y #2",
      "90":"y #2",
      "91":"y #2",
      "92":"y #2",
      "93":"y #2",
      "94":"y #2",
      "95":"y #2",
      "96":"y #2",
      "97":"y #2",
      "98":"y #2",
      "99":"y #2"
    },
    "safari":{
      "3.1":"n",
      "3.2":"n",
      "4":"n",
      "5":"n",
      "5.1":"n",
      "6":"n",
      "6.1":"n",
      "7":"n",
      "7.1":"a",
      "8":"a",
      "9":"a",
      "9.1":"a",
      "10":"y",
      "10.1":"y",
      "11":"y",
      "11.1":"y",
      "12":"y",
      "12.1":"y",
      "13":"y",
      "13.1":"y",
      "14":"y",
      "14.1":"y",
      "15":"y",
      "15.1":"y",
      "TP":"y"
    },
    "opera":{
      "9":"n",
      "9.5-9.6":"n",
      "10.0-10.1":"n",
      "10.5":"n",
      "10.6":"n",
      "11":"n",
      "11.1":"n",
      "11.5":"n",
      "11.6":"n",
      "12":"n",
      "12.1":"n",
      "15":"a",
      "16":"a",
      "17":"a",
      "18":"a",
      "19":"a",
      "20":"a",
      "21":"a",
      "22":"a",
      "23":"a",
      "24":"a",
      "25":"a",
      "26":"a",
      "27":"a",
      "28":"a",
      "29":"a",
      "30":"a",
      "31":"a",
      "32":"a",
      "33":"a",
      "34":"a",
      "35":"a",
      "36":"a",
      "37":"a",
      "38":"y #2",
      "39":"y #2",
      "40":"y #2",
      "41":"y #2",
      "42":"y #2",
      "43":"y #2",
      "44":"y #2",
      "45":"y #2",
      "46":"y #2",
      "47":"y #2",
      "48":"y #2",
      "49":"y #2",
      "50":"y #2",
      "51":"y #2",
      "52":"y #2",
      "53":"y #2",
      "54":"y #2",
      "55":"y #2",
      "56":"y #2",
      "57":"y #2",
      "58":"y #2",
      "60":"y #2",
      "62":"y #2",
      "63":"y #2",
      "64":"y #2",
      "65":"y #2",
      "66":"y #2",
      "67":"y #2",
      "68":"y #2",
      "69":"y #2",
      "70":"y #2",
      "71":"y #2",
      "72":"y #2",
      "73":"y #2",
      "74":"y #2",
      "75":"y #2",
      "76":"y #2",
      "77":"y #2",
      "78":"y #2",
      "79":"y #2",
      "80":"y #2",
      "81":"y #2",
      "82":"y #2"
    },
    "ios_saf":{
      "3.2":"n",
      "4.0-4.1":"n",
      "4.2-4.3":"n",
      "5.0-5.1":"n",
      "6.0-6.1":"n",
      "7.0-7.1":"a",
      "8":"a",
      "8.1-8.4":"a",
      "9.0-9.2":"a",
      "9.3":"a",
      "10.0-10.2":"y",
      "10.3":"y",
      "11.0-11.2":"y",
      "11.3-11.4":"y",
      "12.0-12.1":"y",
      "12.2-12.5":"y",
      "13.0-13.1":"y",
      "13.2":"y",
      "13.3":"y",
      "13.4-13.7":"y",
      "14.0-14.4":"y",
      "14.5-14.8":"y",
      "15.0-15.1":"y"
    },
    "op_mini":{
      "all":"n"
    },
    "android":{
      "2.1":"n",
      "2.2":"n",
      "2.3":"n",
      "3":"n",
      "4":"n",
      "4.1":"n",
      "4.2-4.3":"n",
      "4.4":"a",
      "4.4.3-4.4.4":"a",
      "96":"y #2"
    },
    "bb":{
      "7":"n",
      "10":"a"
    },
    "op_mob":{
      "10":"n",
      "11":"n",
      "11.1":"n",
      "11.5":"n",
      "12":"n",
      "12.1":"n",
      "64":"y #2"
    },
    "and_chr":{
      "96":"y #2"
    },
    "and_ff":{
      "94":"y #2"
    },
    "ie_mob":{
      "10":"n",
      "11":"a #1 #2"
    },
    "and_uc":{
      "12.12":"y #2"
    },
    "samsung":{
      "4":"a",
      "5.0-5.4":"y #2",
      "6.2-6.4":"y #2",
      "7.2-7.4":"y #2",
      "8.2":"y #2",
      "9.2":"y #2",
      "10.1":"y #2",
      "11.1-11.2":"y #2",
      "12.0":"y #2",
      "13.0":"y #2",
      "14.0":"y #2",
      "15.0":"y #2"
    },
    "and_qq":{
      "10.4":"y #2"
    },
    "baidu":{
      "7.12":"a"
    },
    "kaios":{
      "2.5":"a"
    }
  },
  "notes":"As ES6 refers to a huge specification and browsers have various levels of support, \"Supported\" means at least 95% of the spec is supported. \"Partial support\" refers to at least 10% of the spec being supported. For full details see the [Kangax ES6 support table](https://kangax.github.io/compat-table/es6/).",
  "notes_by_num":{
    "1":"Notable partial support in IE11 includes (at least some) support for `const`, `let`, block-level function declaration, typed arrays, `Map`, `Set` and `WeakMap`.",
    "2":"Does not support [tail call optimization](https://kangax.github.io/compat-table/es6/#test-proper_tail_calls_%28tail_call_optimisation%29)",
    "3":"Only has partial Symbol support and partial support for `RegExp.prototype` properties"
  },
  "usage_perc_y":95.77,
  "usage_perc_a":2.4,
  "ucprefix":false,
  "parent":"",
  "keywords":"javascript,block-scoped,string.prototype.includes,string.prototype.endswith,string.prototype.repeat,array.prototype.find,array.prototype.findindex,array.prototype.fill,object.assign",
  "ie_id":"",
  "chrome_id":"",
  "firefox_id":"",
  "webkit_id":"",
  "shown":true
}
